WHAT AM I SUPPOSED TO DO WITH THESE FACE EMOJIS?

There are many emoji lists out there already so I'm adding to the din.
  1. β€’
    πŸ™ƒ
    Huh.
  2. β€’
    πŸ€—
    Please tell me it's emoji jazz hands.
  3. β€’
    What's the difference between 😒 and πŸ˜₯ and 😰?
    Could you please use them in a sentence?
  4. β€’
    Also, πŸ˜ͺ
    Upper lip sweat?
  5. β€’
    πŸ˜ΊπŸ˜ΈπŸ™€πŸ˜½πŸ˜ΌπŸ˜»πŸ˜ΉπŸ˜ΏπŸ˜Ύ
    Aren't dogs equally expressive? Where are the dog face emojis?!?!
  6. β€’
    Unrelated, I would love a fingers crossed emoji. If we've got one giving the finger, surely it's not too much to ask. That is all.